LSs1Power

iTrader: (5)

I have been searching the board and there is no set place to list the different heads used on Forced Induction setups and how they perform. So I thought about creating this thread and hopefully we can fill it with useful information for current and future FI seekers.

Please answer the following questions:

1. Engine cid and compression ratio?
2. Type of Heads?
3. Chamber size in cc?
4. Intake and exhaust valve size?
5. Intake Manifold and TB size?
6. Header size?
7. FI kit used?
8. How much boost are you running?
9. How much power are you making?
10. What tranny are you running?
11. What cam are you running?

Disclaimer:
This thread is not a scientific test... It is not intended to start a flame fest between anyone. Please list the results if u have them and that’s about it. Take the information for what its worth.

LSs1Power

iTrader: (5)

I will start here.

1. Stock 346cid with 10.1 C/R
2. Stock 02 LS1 Heads
3. 66cc
4. Stock
5. Stock LS6 manifold with stock TB
6. 1 3/4 FLP's
7. ATI D-1SC SDCE 8 rib
8. 8-13psi
9. 550(dynojet) to 630rwhp(mustang dyno)
10. Stock T56
11. FM7 cam 224/230 .587 .593 114LSA

Forced370GTO

1. 403ci 9.0:1 cr
2. ETP 245cc heads
3. 72cc
4. 2.10" intake, 1.57" exhaust
5. Stock ls6 intake + stock gto t-body
6. 2inch custom
7. F1R Intercooled
8. 13.4 psi
9. 720rwhp (mustang dyno)

enginjoe

iTrader: (11)

Have you seen this? I know it doesn't have everything you want, but some good info is there.

https://ls1tech.com/forums/forced-induction/547781-what-heads-you-using-your-boosted-application.html

Pro Stock John

iTrader: (34)

Keeping in mind that autos do not dyno like stick cars, so your numbers might need a correction factor of like 10%....

1. Engine cid and compression ratio? 348ci; 8:1
2. Type of Heads? AllPro unported
3. Chamber size in cc? 70cc
4. Intake and exhaust valve size? 2.05/1.60
5. Intake Manifold and TB size? LS2; NW 90mm
6. Header size? Truck manifolds
7. FI kit used? Custom Speed Inc. kit
8. How much boost are you running? up to 26psi
9. How much power are you making? 800rwhp
10. A3

LSs1Power

iTrader: (5)

Of course i agree with u. I will add Question #10 as what tranny are you running.

camarokid94

iTrader: (2)

well anyone else?

KHShapiro

iTrader: (10)

MID 427 , 9-1
etp 255
Ported Vic Jr. , 105

pics can be viewed via the link in my sig

kp

iTrader: (34)

asking what camshaft would help also

Drewstein

1. Stock
2. Stock
3. Stock
4. Stock
5. LS6 Intake, LS2 TB
6. LG LTs
7. D1SC
8. 9-10#s
9. 640rwhp
10. Stock

LSs1Power

iTrader: (5)

LOL... Good idea i will add it as Question #11. Hopefully we will get more people to participate.

By the way... Where is your input?

2000 Tran Zam

iTrader: (2)

not to get off topic here, but you down for a race once I get my drive shaft in and clutch broken in?

My answers :

1. Engine cid and compression ratio? 408 8.5
2. Type of Heads? hand ported afr 205's
3. Chamber size in cc? I think 67 cc's
4. Intake and exhaust valve size? 2.05 or 2.08, not sure
5. Intake Manifold and TB size? 90/90 fast
6. Header size? 1 7/8
7. FI kit used? custom Turbo kit
8. How much boost are you running?13.5 lbs
9. How much power are you making? 833rwhp/828rwtq
10. What tranny are you running? built 6 speed
11. custom 236/230 FMS cam.

NA$TY-TA

iTrader: (21)

Please answer the following questions:

1. Engine cid and compression ratio? 370ci 8.87:1
2. Type of Heads? 6.0L
3. Chamber size in cc? 73cc
4. Intake and exhaust valve size? 2.02/1.57 valves
5. Intake Manifold and TB size? GMPP Carb Intake, 90mm Accufab TB
6. Header size? 1 3/4
7. FI kit used? Stenod Custom S88 Turbo
8. How much boost are you running? 13-14 pump 93, 20+ 116
9. How much power are you making? 17 psi mix of pump 93 and 110 842rwhp, 704rwtq
10. What tranny are you running? Rossler Glide
11. What cam are you running? Comp XER 224/222 .581/.581 114+2



Kyle

RX-Ben

iTrader: (7)

Can anyone post the reasoning they used to make these choices?

Why a carb manifold over an LS6? or why the LSX over the LS6?

Also- any big gain with going w/AFRs (205 or 225) vs. just stock 6.0 heads?

Thanks
Ben

kp

iTrader: (34)

I havent dynod my car in over a year so I dont have any accurate dyno numbers

NA$TY-TA

iTrader: (21)

I used the carb intake fow better flow in the upper RPM's and equal distrabution of fuel and air into each cylinder

2000 Tran Zam

iTrader: (2)

90/90 over ls6 because it will give you more power/psi.

so just lessens restriction allowing more power at the same boost level.

Pro Stock John

iTrader: (34)

People try to run bigger throttle bodies hence their move to 90mm FAST intakes and other intakes that can take a 90mm TB.

I elected to stay with a LS2 intake that uses an 90mm intake since some folks I know feel that most elbow setups have too many compromises in their design to warrant doing them... but I have by no means shown any evidence of that.

LSs1Power

iTrader: (5)

No problem.. put your race weight and ET with trapspeed instead. That would suffice.

LSs1Power

iTrader: (5)

Keep em coming people.